Time-controlled damper.



Patented May 6, I9D2.

R. A. KERR.

TIME CONTROLLED DAMPER.

(Application filed. Feb. 17, 1902.)

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UNrrED STATES lbrrnnr Orrrce;

ROBERT A. KERR, OF ST. CLAIRSVILLE, OHIO TIIVE-CONTROLLEP DAM PERL SPECIFIGATION forming part of Letters Patent No. 699,330, dated. May 6, 1902.

Application filed February 17, 1902. Serial No. 94,518. No mod l To ctZZ whom, it may concern:

Be it known that 1, ROBERT A. KERR, a citizen of the United States, residing at St. Olairsville, in the county of Belmont and State of Ohio, have invented certain new and useful Improvements in Damper-Regulators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention belongs to the class of apparatus for automatically controlling heat appliances, such as stoves and furnaces, whereby the damper-and draft-passages may be opened to admit of the fire burning briskly, so as to warm a dwelling prior to rising in the morning or at any stated interval.

Mechanism of the type and for the purpose aforesaid for the most part comprises a timemovement, a train of gearing having connection with the damper or other part to be moved, and a trip for releasing the train of gearing by the clock-movement at a predetermined time.

This invention provides a novel form of trip mechanism; and it consists of the structural details and novel features which hereinat'ter will be more particularly set forth, illustrated, and finally claimed.

In the drawings hereto attached and forming a part of the specification, Figure 1 is an elevation of a mechanism embodying the invention. Fig. 2 is a horizontal section on the line X X of Fig. 1. Fig. 3 is a detail section on the line Y Y of Fig. 1. Fig. 4 is a perspective view of the setting-dial and trip mechanism.

Corresponding and like parts are referred to in the following description and indicated in all the Views of the drawings by the same reference characters.

The time-movement and train of gearing may be of any construction and suitably mounted. As shown, the train of gearing comprises an idle shaft 1, provided with a gear-wheel 2 in mesh with a pinion 3 on the fan-shaft 4 and with a pinion 5 in mesh with a gear-wheel 6 on the winding-shaft 7. A gear-wheel 8, secured to the winding-shaft 7,

meshes with a rack-bar 9, connected in any convenient way with the damper or part to be moved. The fan-shaft 4 has an arm 10, having a portion extended in the path of a detent 11, which, as shown, consists of a lever mounted on a support 12. The train of gearing is run by means of a spring 13 and is held in restraint by means of the detent 11, engaging with the arm 10. At the proper time the arm is released, and the train of gearing being set in' motion moves the bar 9 and effects the desired result. The time-movement comprises the arbor 14, to which the minutehand 15 is attached, and the hollow shaft 16, to which the hour-hand 17 is affixed. The setting-dial 18 is mounted upon the shaft 16, so as to-be adjusted to any required point and is held in place by a cam-lever 19, pivoted thereto. This cam-lever is moved outward at its free end to release the dial and serves as a handle or finger-grip to admit of the dial being conveniently turned to the required position. When the dial is adjusted, the outer end of the lever19 is pressed toward the dial, so as to lie close thereagainst and be out of the way, its cam-head binding 011 the shaft 16 and. securing the dial thereto. A finger or projection 20 extends radially from the dial 18 and moves therewith, its outer end being beveled to engage with the beveled end of a spring-actuated bolt 21, slidably mounted in a keeper 22, attached to a bracket of the frame.

A wire or rod 23 has its lower end connected to the detent 11, and its upper end is bent, as at 24, to overlapa projection 25 at the side of the bolt 21, whereby the detent 11 is held in the path of the arm 10. When the bolt 21 is tripped, the projection 25 is withdrawn under the bent end 24 from the part 23, and the latter drops either by its own weight or by the action of the spring 26 and withdraws the detent from the path of the arm 10, so as to release the train of gearing, which being set in motion opens the damper or moves the part to be actuated. Aknob 27 is connected with jection 25 of the bolt 21 out of the path of I00 the bent end 24L of the rod 23 when moving said parts upward, as in the act of resetting the mechanism.

Having thus described the invention, what is claimed as new is 1. In time setting mechanism a train of gearing, a time-movement, a setting dial, meansfor securing the setting-dial to the hourshaft of the time-movement, a detent for holding the train of gearing in restraint, a bolt adapted to hold the detent in operative position, and an arm extended from the aforesaid dial to effect a release of the detent and permit movement of the train of gearing, substantially as set forth.

2. In time setting mechanism, the combination with a time-movement, a train of gearing, and a detent mechanism for holding the train of gearing in restraint, a dial loosely mounted upon the hour-shaft of the timemovement, and a cam-lever pivoted to said dial and serving to secure it to the shaft in an adjusted position and also adapted to provide a finger-grip or handle to assist in rotation of the dial, substantially as set forth.

3. In combination, a time movement, a train of gearing, a detent for holding the train of gearing in restraint, a sliding bolt, a rod connected with the detent and having a bent portion overlapping a part of the sliding bolt, a dial provided with an arm for operating the sliding bolt, and means for securing said dial to the hour-shaft of the time-movement, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT A. KERR. [L. s]

\Vitnesses:

D. H. IVIILLIGAN, D. S. OREAMER. 

